{
  "schemaVersion": "1.0",
  "articleSlug": "collector-art-antique-appraisal-preparation-guide",
  "topic": "collector art antique appraisal preparation",
  "provenanceManifestSha256": "07243a04fc79c6fe7ac307ac7d076e9757e54c3ddb23aadac2e40e08a810bcee",
  "comparables": [
    {
      "compId": "comp-7b9d0a3c5c5dcaf8",
      "title": "CHINESE ART DECO COLLECTOR'S CABINET",
      "auctionHouse": "Thomaston Place Auction Galleries",
      "saleDate": "2019-06-02",
      "lotNumber": "3457",
      "price": {
        "amount": 750,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/chinese-art-deco-collector-s-cabinet-3457-c-54b47d0be4",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Thomaston Place Auction Galleries|2019-06-02T11:00:00.000Z|3457",
      "retrievedAt": "2026-08-05T12:32:09.112Z",
      "sourceAccess": {
        "status": "reachable",
        "reachableAtCollection": true
      },
      "verificationStatus": "live_source_matched",
      "rawRecordSha256": "7c3aa35f9604ca6ca3e22c8ac99cf0009eb8b44d3beaf8476c49377602ffb9cc",
      "provenanceManifestSha256": "07243a04fc79c6fe7ac307ac7d076e9757e54c3ddb23aadac2e40e08a810bcee",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-23208a941b1ef34e",
      "title": "Cache-pot Hector Guimard, Art Nouveau, made in Fives-Lille manufacture, approx. 1900, collector's item",
      "auctionHouse": "A10 by Artmark",
      "saleDate": "2021-02-24",
      "lotNumber": "67",
      "price": {
        "amount": 1400,
        "currency": "EUR"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/cache-pot-hector-guimard-art-nouveau-made-in-fives-lille-manufacture-approx-1900-collector-s-item-67-c-9f14f7a9dc",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "A10 by Artmark|2021-02-24T06:30:00.000Z|67",
      "retrievedAt": "2026-08-05T12:32:09.112Z",
      "sourceAccess": {
        "status": "reachable",
        "reachableAtCollection": true
      },
      "verificationStatus": "live_source_matched",
      "rawRecordSha256": "924583aa568a067799e5e529bd3691670d06d2c7c786173ccfbd4e305506358c",
      "provenanceManifestSha256": "07243a04fc79c6fe7ac307ac7d076e9757e54c3ddb23aadac2e40e08a810bcee",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-f9b5ee9d541af26a",
      "title": "Pablo Picasso PSA GEM MT 10 Rare ALS Addressed to Art Collector, Patron & Financial Advisor",
      "auctionHouse": "University Archives",
      "saleDate": "2025-06-04",
      "lotNumber": "128",
      "price": {
        "amount": 5500,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/pablo-picasso-psa-gem-mt-10-rare-als-addressed-to-art-collector-patron-financial-advisor-128-c-5a346d2891",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "University Archives|2025-06-04T10:00:00.000Z|128",
      "retrievedAt": "2026-08-05T12:32:09.112Z",
      "sourceAccess": {
        "status": "reachable",
        "reachableAtCollection": true
      },
      "verificationStatus": "live_source_matched",
      "rawRecordSha256": "d4b8f2423fc9bcc9ee75135cf3ba1cf2c1d89e959844d46043b0a322b397e6f1",
      "provenanceManifestSha256": "07243a04fc79c6fe7ac307ac7d076e9757e54c3ddb23aadac2e40e08a810bcee",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-8ae0be8ac0b528d1",
      "title": "Pablo Picasso PSA GEM MT 10 Rare ALS Addressed to Art Collector, Discussing Another One!",
      "auctionHouse": "University Archives",
      "saleDate": "2024-12-11",
      "lotNumber": "176",
      "price": {
        "amount": 13000,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/pablo-picasso-psa-gem-mt-10-rare-als-addressed-to-art-collector-discussing-another-one-176-c-595441781e",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "University Archives|2024-12-11T10:00:00.000Z|176",
      "retrievedAt": "2026-08-05T12:32:09.112Z",
      "sourceAccess": {
        "status": "reachable",
        "reachableAtCollection": true
      },
      "verificationStatus": "live_source_matched",
      "rawRecordSha256": "7bb400a79d17b468d615ef5dc3bb7e9bce5156f42442572ff43feae531ee98b5",
      "provenanceManifestSha256": "07243a04fc79c6fe7ac307ac7d076e9757e54c3ddb23aadac2e40e08a810bcee",
      "auctionPhotoSupplied": true
    },
    {
      "compId": "comp-4084cd9c3e6fe354",
      "title": "Edgar Alwin Payne, A Day's Preparation",
      "auctionHouse": "Rago Arts and Auction Center",
      "saleDate": "2020-09-24",
      "lotNumber": "617",
      "price": {
        "amount": 750,
        "currency": "USD"
      },
      "sourceUrl": "https://www.invaluable.com/auction-lot/edgar-alwin-payne-a-day-s-preparation-617-c-c644526b83",
      "authoritativeUrl": null,
      "sourceSystem": "invaluable.com",
      "sourceRecordId": "Rago Arts and Auction Center|2020-09-24T10:00:00.000Z|617",
      "retrievedAt": "2026-08-05T12:32:09.114Z",
      "sourceAccess": {
        "status": "reachable",
        "reachableAtCollection": true
      },
      "verificationStatus": "live_source_matched",
      "rawRecordSha256": "0ee0efd1f0171fcb7b79a318f6712dffce09ed2fd1f2ace1ae4278d0e9b3ad79",
      "provenanceManifestSha256": "07243a04fc79c6fe7ac307ac7d076e9757e54c3ddb23aadac2e40e08a810bcee",
      "auctionPhotoSupplied": true
    }
  ]
}
